The oracles were written on palm-leaves in Greek, and with various signs and hieroglyphs, and the volumes were bundles of these leaves tied together.

In the year 671 of Rome, eighteen years before the Christian era, the old Temple of Jupiter, built by the Tarquins, was destroyed by fire, and with it perished the Books of Destiny. Six years after the temple was rebuilt, and an attempt was made to recover the Sibylline oracles, by sending throughout Italy for oracles reported to be Sibylline. The deputies sent brought back from Erythæa a thousand verses, but the collection rapidly increased in such quantities that Augustus ordered them to be examined, and such as proved to be worthless he burnt. After a second sifting, those that remained were put into two golden coffers and placed under the pedestal of the statue of the Palatine Apollo.

As is well known, there were in circulation a number of forged Sibylline oracles; some of these were the product of the Jewish Therapeutæ, others of Christians. In his hatred of Christianity, the Emperor Julian ordered search to be made for these fictitious oracular books, that they might be destroyed. In 363 the Temple of the Palatine Apollo caught fire and was destroyed. The Christians charged Julian with having caused the fire so as to get rid of the Sibylline oracles hid under the statue of Apollo. But these had not been injured; the gold boxes in which they were, were opened, and to their confusion the Christians found that the oracles contained no prophecies concerning Christ, only sortes celebrating the gods Zeus, Aphrodite, Hera, &c.

The accusation brought by the Christians against Julian recoiled upon them, for it was they who, later, by the hands of Stilicho, destroyed the collection. The order for the destruction was given by two Christian emperors, Honorius and Arcadius, on the plea that these oracles favoured and encouraged paganism.

Saul, it will be remembered went to consult a witch in the cave of
Endor, where she conjured up before him the spirit of Samuel.

Isaiah rebukes the Jews for "lodging in the monuments," doubtless to obtain oracles from the dead, to raise up the ghosts of the deceased, and exhort from them prophecies as to the future. As already pointed out, the dead and the pagan gods were one and the same. To consult a deity was to consult a hero or an ancestor of a former age.

There is a curious story in an Icelandic Saga of a shepherd, named Hallbjörn, on a farm where was a huge cairn over the dead scald or poet Thorleif. The shepherd, whilst engaged on his guard over his master's flock, was wont to lie on the ground and sleep there. On one occasion he saw the cairn open and the dead man come forth, and Thorleif promised to endow him with the gift of poetry if he would compose his first lay in his, the dead man's praise. And he further promised that Hallbjörn should become a famous scald and sing the praises of great chieftains. Thereupon the tenant of the tomb retired within again, and the shepherd on waking found himself endowed with poetic gift, and he sang a lay in honour of Thorleif. "And he became a famous scald, and went abroad, and sang songs in honour of many great men, and obtained high honour, and good gifts, and became very wealthy." [Footnote: Fornmavma Sögur, Copenh. 1827, iii. pp. 102-3.]

It will be remembered that Saul's interview was with the ghostly Samuel through the intervention of the witch. And there are many stories of living men endeavouring to obtain knowledge of the future through invocation of the spirits of the dead. Indeed spiritualists at the present day carry on the same business.

One thing that conduced to the belief that certain caves were inhabited by gods and spirits, was that strange sounds at times issued from them. These were caused by currents of air entering some of the apertures and vibrating through the passages, provoking notes as if these galleries were organ pipes. This is the explanation of the Æolian cavern of Terni, supposed to be the abode of spirits; and a cave near Eisenach was long reported to be an entrance to hell, because of the moans and sighs that were heard issuing from it.

The echo also was quite inexplicable to the ignorant, and was assumed to be the voice of some spirit or mountain gnome living in the heart of the rock, to whose habitation a cave gave access.